SH7211 Datasheet, PDF (980/1228 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperHTM RISC engine Family

Section 21 Flash Memory
• Response H'31 (1 byte): Response to the inquiry on clock modes
• Size (1 byte): The total length of the number of modes and mode data fields. (fixed at 1)
• Mode (1 byte): Selectable clock mode
• SUM (1 byte): Checksum
(d) Clock-Mode Selection
In response to the clock-mode selection command, the boot program sets the specified clock
mode. The boot program will return the information on the selected clock mode in response to
subsequent inquiries.
Command H'11
Size
Mode
SUM
• Command H'11 (1 byte): Clock mode selection
• Size (1 byte): Number of characters in the clock-mode field (fixed at 1)
• Mode (1 byte): A clock mode returned in response to the inquiry on clock modes
• SUM (1 byte): Checksum
Response
H'06
• Response H'06 (1 byte): Response to clock mode selection
This is the ACK code and is returned when the specified clock-mode matches one of the
available clock modes.
Error
response
H'91
ERROR
• Error response H'91 (1 byte): Error response to clock mode selection
• ERROR (1 byte): Error code
H'11: Sum-check error
H'21: Non-matching clock mode
Rev. 2.00 May. 08, 2008 Page 956 of 1200
REJ09B0344-0200